Brazing compound.



UN ITED STATES PATENT OFFICE.

JOHN A. RENNIE, OF NEW YORK, N. Y.

BRAZING COMPOUND.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed March 20, 1906. Serial No. 306.966.

To all whom it may concern.-

Be it known that I, JOHN A. RENNIE, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Brazing Compounds, of which the following is a specification, such as will enable those skilled in the art to which it a pertains to make and use the same.

his invention relates to a new and useful' the surfaces of the metals to be brazed together are covered with this compound and are heated in a proper furnace.

A flux of boracic acid and s elter is then poured thereon, whereby a per ect joint is formed between the two metals desired to be united.

I am not aware that all the ingredients of my compositlon have heretofore been used to ether.

aving fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A brazing compound consisting of oxid of manganese, red hematite ore and boracic acid combined in suitable proportions, substantially as described.

2. The herein-described composition of matter consisting of two parts by weight of oXid of manganese,three parts by weight of red hematite ore and two parts by weight of boracic acid in dust form, substantially as described. 3. The hereindescribed composition of matter consisting of two parts by weight of oxid of manganese, three parts by weight of red hematite ore and two parts by weight of impalpable boracic acid, substantially as described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribmg witnesses, this 19th day of March, 1906.

JOHN A. RENN IE.

Witnesses:

F. A. STEWART, O. E. MULREANY. 

